OT - calculating length

[Atom 'Smasher']

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it's been a long time since i had any math classes... can anyone help me
figure out how to calculate octet lengths as specified in
	rfc2440:4.2.2.2. Two-Octet Lengths

	A two-octet Body Length header encodes a length of from 192 to
	8383 octets.  It is recognized because its first octet is in the
	range 192 to 223.  The body length is equal to:

	bodyLen = ((1st_octet - 192) << 8) + (2nd_octet) + 192

so, if i have something that's a certain size, how do i calculate that as
a two octet representation? how do i verify that it's correct? can someone
explain that to me in a "dumbed down" way?

thanks...


 	...atom

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